Mixing and kneading machine.



No. 7|3,088. Patented Nov. ll, I902. A. FRIEDRICH.

MIXING Arm KNEADING MACHINE.

(Application filed June 80,1902.) (No Model.) 3 Sheets-Sheet I.

I WM eat No. 78,088. Patented Nov. ll, I902. A. FRIEDRICH.

MIXING. AND KNE'ADING MACHINE.

(Applicatibnfiled June so, 1902. (No Model.) 3 Sheets8heet 2.

THE NORRIS PETERS w, PHOTO LITHO., WASHINGTON. o. c.

No. 7|3,0as. Patented Nqy. n, I902.

A. FRIEDRICH. MIXING AND KNEADING MACHINE.

(Application med June so, 1902.

(lo ll odol.) 3 Shouts-Sheet 3.

"m: nonms PETERS 00., nioTo-uwc" wnsumorom o. c.

"Unitas STATES;

PATENT Genres.

I AUGUST FRIEDRICH, OF \VINTERTHUR, SWVITZERLAND.

MIXING AND K-NEADING MACHINE.

SPECIEECA'IZGBI forming part of Letters Patent No. 713,088, dated November 1 1, 1902.

T at whom it may concern.-

Be it known that 1, AUGUST FRIEDRICH, a citizen of the Republic of Switzerland, residing at Winterthur, Switzerland, have invented new and useful Improvements in Mixing and Kneading Machines, of which the following is a specification.

This invention has for its object a mixing and kneading machine, one form of construction of which is shown as an example in the accompanying drawings, in which Figure l-is a longitudinal section on the line A B of Fig. 2; Fig. 2, an end View, and Fig. 3 a cross-section on the line C D of Fig. 1.

Three groups of fingers 3 are arranged in proximity to one another on a shaft in the center of a kneading-trough 1, through which 1 the said shaft 2 is' carried, and also to left and right of these fingers bushings 4 and 5 mounted on the extension 9 of the bushing5 within the kneading-trough. The shaft 2 is mounted in a frame 16, on which thedrivingshaft 18 is also mounted by means of a support 17, attached to the frame, and a transmission-shaft 20 is also no ouuted on the frame by means of a bracket 19. On the drivingshaft 18 cog-wheels 22 and 23 are fixed, of which the cog-wheel 22 gears with a cog-wheel 24, mounted on the shaft 2, and the cog-wheel 23 in turn with the cog-wheel 25, fixed on the prolongation 8 of the bushing 4 and also with the cog-Wheel 11. By means of a cog-Wheel 26, also mounted on the bushing 4, a cogwheel 27, mounted on the transmission-shaft 20, is driven, said shaft 20 in turn driving a cog-Wheel 29, mounted on the prolongation 9 of the bushing 5, by meansof a cog-wheel 28. On the center of the cross-bar 14 two fingers 30 are arranged, projecting inward toward the shaft 2, which fingers engage between the three groups of fingers-3 on the shaft 2. The latter is provided with a central longitudinal bore 31, extending from the middle of the shaft to one end, at which latter it is connected with a water-pipe 32, while in the middle of the shaft said bore communicates with the interior of the. kneadingtrough by means of a bore 33, passing through one of the groups of fingers. trough is thus loosely revolubly mounted, by means of'its end walls, on thebushing 10 and the prolongation 9; but it is prevented from turning or rotating by means of a stop mechanism which is adjustably mounted in the frame 16,-consisting of a rod 34 and bolt 35, the latter of which engages in a socket 36, formed on the kneading-trough. In order to prevent the waterintroduced into the kneading-trough through the bore 31 of the shaft 2 from soaking through the bearings of the same, washer-rings 37 are inserted on the-- shaft 2 between the bushings and the groups of fingers.

The mode of working of the machine hereinbefore described is as follows, assuming that it is to be employed for preparing meat for The kn eadin gthe manufacture of sausages: So much of the meat to be dealt withfor instance, chopped 1neatis introduced into the kneading-trough that the fingers 33, mounted on the shaft 2, are quite covered thereby. be set in operation, the blades 6 and 7, arms 13 and 15, with the cross-piece 14, and the fingers 30 and the groups of fingers 3 revolve around the central axis of the shaft 2 in the kneading-trough, being operated from the driving-shaft by the transmission-gear; but they rotate in different directions and at different speeds. The groups-of fingers 3, which are directly connected with the shaft 2, are operated or, rather, turned by the latter through the cog-wheels 22 and 24 at the same speed as the driving-shaft 18. The mixingblades 6 and 7 are rotated in the same direction as the groups of fingers 3, but at a lower speed. Their movement is imparted to them by means of cog-wheels 23 25 26 27 28 29, of which cog-wheels 25 to 29 are of uniform size, and the cog-wheel 23, mounted on the driving-shaft, is smaller than the others. The arms 13 and 15, with the cross-piece 14, are turned by means of the internal toothing 11 If, then, the machine slowly in the opposite direction from the mixing-blades and groups of fingers, the cogwheel 23, mounted on the driving-shaft, gearing with theinternaltoothing of the wheel 11. In the kneading-trough thus three kinds of bodies are caused to rotate at dilferent speeds and in different directions, whereby the following result is produced. The groups of fingers 3, rotating at the same speed as the driving-shaft, engage the pieces of meat or the like and carry them through between the slowlymotating fingers 30. As the latter project between the groups of fingers the meat carried along thereby is squeezed and rubbed, and is thus treated in a similar manner to that of kneading and rubbing by hand. By the rapidly-rotating groups of fingers thewater discharged from one of these is mixed with the meat. The two mixing-blades, which stand transversely to the central axis of the shaft 2 and at an obtuse angle to one another, in their rotation convey the meat to the groups of fingers and mix the same also in the kneading-trough. By the introduction of water into the mass of meat through the bore 31 of the shaft 2 between the groups of fingers (in contrast to what takes place on the present machines, in which water is sprinkled from above into the kneading-trough upon the mass of meat) the water is at once mixed evenly and thoroughly with the particles of meat on its discharge, which is of importance for the good appearance of the product.

In order to allow of the kneading-trough being more easily discharged, the stop mechanism-that is to say, the rod 3I-is drawn in the direction indicated by the arrow, by which means the bolt 35 is drawn out of the sockets 36, and the kneading-trough may be turned so that its opening is at the bottom or at one side, as desired.

As the temperature of the meat to be treated is of importance for the nastiness of the product, the mixing-water is usually warmed in winter and cooled in summer. This can be effected in this improved kneading-machine by passing the water which enters the shaft through a suitable apparatus-for instance, a series of spiral tubes in a refrigerating or heating vessel-so that the meat in the kneading-trough may be kept at the correct temperature by means of the water which is introduced therein.

Instead of a shaft 2 two such shafts with mixing-blades and mutually-engaginggroups of fingers may be provided, in which case the cross-piece 14 with its fingers may be omitted and the water he introduced into the trough in the center between the two shafts.

This improved machine might also be employed in bakeries for kneading dough and the like.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is 1. In a mixing-machine, the combination with a trough, of slowly-rotating fingers, sets of more rapidly rotating fingers cooperating therewith and conveyer-blades to convey the contents of the trough to said cooperating fingers, substantially as described.

2. In a mixing-machine, the combination with a trough, of a pair of rotating fingers, three sets of intermeshing fingers and conveyer-blades on each side of the three sets of fingers, and means to drive the blades, the

pair and the sets of fingers at different speeds,

substantially as described.

3. In a mixing-machine, the combination with a trough, of two rotating fingers, a shaft, a central set of fingers thereon to take between the first-mentioned one and adjacent sets of fingers to cooperate with said firstmentioned ones, means to admit water between fingers of the central set, conveyerblades and means to drive the two blades, the sets of blades and the conveyor-blades at different speeds, substantially as described.

4. In a mixing-machine, the combination with a trough, of a shaft having a bore, three adjacent sets of mixing-fingers thereon, said bore adapted to deliver water between fingers of the central set of these fingers, a bushing on said shaft at each side of the adjacent sets of fingers, conveyor-blades on the bushings, a cross-piece having a pair of fingers coopcrating with the first-mentioned ones, said cross-piece revoluble on the said bushings, means to drive the sets of fingers and the conveyer-bladcs at different speeds in the same direction, and means to drive the cross-piece and fingers thereon at still a different speed in an opposite direction, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

AUGUST FRIEDRICH.

Vitnesses:

MoNTz VEITH, A. LIEBERKNECHT. 

